用java、js获取URL返回状态码

描述：使用java或者js访问某个网站，返回状态码

1.java实现

//  用getResponseCode可以获取URL返回状态码
String surl = "";
try {
           surl="你的url";
               URL url = new URL(surl);
               URLConnection rulConnection   = url.openConnection();
               HttpURLConnection httpUrlConnection  =  (HttpURLConnection) rulConnection;
               httpUrlConnection.setConnectTimeout(300000);
               httpUrlConnection.setReadTimeout(300000);
               httpUrlConnection.connect();
               String code = new Integer(httpUrlConnection.getResponseCode()).toString();
               String message = httpUrlConnection.getResponseMessage();
               System.out.println("getResponseCode code ="+ code);
               System.out.println("getResponseMessage message ="+ message);
               if(!code.startsWith("2")){
                    throw new Exception("ResponseCode is not begin with 2,code="+code);
               }
               System.out.println(getCurDateTime()+"连接"+surl+"正常");
          }catch(Exception ex){
               System.out.println(ex.getMessage());
          }

2.js实现（成功会返回200，如果页面找不到会返回404）

function GetHttpStatusCode($url){
    $curl = curl_init();
    curl_setopt($curl,CURLOPT_URL,$url);//获取内容url
    curl_setopt($curl,CURLOPT_HEADER,1);//获取http头信息
    curl_setopt($curl,CURLOPT_NOBODY,1);//不返回html的body信息
    curl_setopt($curl,CURLOPT_RETURNTRANSFER,1);//返回数据流，不直接输出
    curl_setopt($curl,CURLOPT_TIMEOUT,30); //超时时长，单位秒
    curl_exec($curl);
    $rtn= curl_getinfo($curl,CURLINFO_HTTP_CODE);
    curl_close($curl);
    return  $rtn;
}
$url = "http://www.baidu.com"；
GetHttpStatusCode（$url）;